Inventor · disambiguated record
Jack Ditcher
Also filed as: DITCHER JACK
18 granted patents·636 citations·filing 1981–1997
96Inventor score
Top patents by PatentIndex Score
18 records- 0194US4387900AMethod and apparatus for providing watertight seal for manhole pipe connectionA LOK PROD·Filed 1982·Granted Jun 14, 1983·91 cites·25 claims
- 0287US5114162AGasket for use in manhole bases and the likeA LOK PROD·Filed 1986·Granted May 19, 1992·49 cites·11 claims
- 0387US4751799AMethod and apparatus for lining manhole assemblies and the likeA LOK PROD·Filed 1986·Granted Jun 21, 1988·59 cites·11 claims
- 0487US4621941AManhole riser having integral flexible waterlock for manhole covers and having a water tight seal for sealed manhole coversA LOK PROD·Filed 1985·Granted Nov 11, 1986·56 cites·30 claims
- 0583US4540310AManhole riser and cooperating sleeve to provide a waterlock for manhole structuresA LOK PROD·Filed 1983·Granted Sep 10, 1985·41 cites·15 claims
- 0682US4737220AMethod of making a manhole riser having integral flexible waterlock for manhole covers and having a water tight seal for sealed manhole coversA LOK PROD·Filed 1986·Granted Apr 12, 1988·43 cites·11 claims
- 0782US4422994AMethod and apparatus for forming inverts in manhole assemblies, and the likeA LOK PROD·Filed 1981·Granted Dec 27, 1983·35 cites·15 claims
- 0880US4941643AApparatus for forming inverts and manhole assemblies and the like utilizing adjustable invert forming members joined with an intermediate flexible portionA LOK PROD·Filed 1989·Granted Jul 17, 1990·36 cites·13 claims
- 0977US4565347AMonolithic precast invert systemA LOK PROD·Filed 1983·Granted Jan 21, 1986·36 cites·11 claims
- 1075US4903970AApparatus for providing a watertight seal for manhole pipe connections including a foldable gasket and clamping band assembly and expansion means for installing the gasket and clamping band assemblyA LOK PROD·Filed 1987·Granted Feb 27, 1990·31 cites·8 claims
- 1173US4711455AGasket for use in manholes and including clamping band having cooperating projections and grooves for preventing relative axial movement of the opposing ends of the clamping band during installation and for facilitating expansion by an expansion jackA LOK PROD·Filed 1985·Granted Dec 8, 1987·28 cites·9 claims
- 1268US4566483ADrop manhole precast encasementA LOK PROD·Filed 1984·Granted Jan 28, 1986·26 cites·14 claims
- 1367US4801417AMethods for forming inverts in manhold assembliesA LOK PROD·Filed 1987·Granted Jan 31, 1989·23 cites·16 claims
- 1466US4685650AApparatus for forming inverts and manhole assembliesA LOK PROD·Filed 1985·Granted Aug 11, 1987·22 cites·50 claims
- 1565US4618464APrecast concrete manhole adjustable bolt slot for securing cast iron frame and cover and method for casting sameA LOK PROD·Filed 1984·Granted Oct 21, 1986·23 cites·13 claims
- 1648US4719724APrecast concrete manhole adjustable bolt slot assembly for securing cast iron frame and coverA LOK PROD·Filed 1986·Granted Jan 19, 1988·15 cites·11 claims
- 1741US5127770ARetaining wall assembly utilizing face panels interlocked with tie-back/anchorsATLANTIC PRECAST CONCRETE INC·Filed 1991·Granted Jul 7, 1992·14 cites·33 claims
- 1831US5860771ARetaining wall/tie-back/anchor assemblyATLANTIC PRECAST CONCRETE INC·Filed 1997·Granted Jan 19, 1999·8 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →